Jepson eFlora
Key to families | Table of families and genera

Key to Mammillaria

View taxon page for Mammillaria

(For a list of species in Mammillaria, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Radial spines in 2–3 superimposed ranks; outer perianth parts long-fringed, inner perianth parts 20–28; seed with large corky aril ..... M. tetrancistra

1' Radial spines in 1 rank; outer perianth parts entire or short-fringed, inner perianth parts 8–16; seed aril 0

2. Inner perianth parts cream to white; bristles in axils of tubercles ..... M. dioica

2' Inner perianth parts rose-pink to rose-purple; axillary bristles 0 ..... M. grahamii var. grahamii

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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